Signments



(No Model.)

J. C. DODS.

CONVERTER.

No. 328,841. [Patented Oct. 20, 1885.

UN rrED hrArEs vArEN'r Erica..

JOHN c. DODs, OE PHILADELPHIA, AssIGNOR, RY DIREor AND MEsNE AssIGNMENrs, rro HENRY w. OLIVER, JR., AND IAIuEs r. wITHEROw, OE

PITTSBURG, PENNSYLVANIA.

CONVERTER.

SPECIFICATON forming part oi' Letters Patent No. 328,841, dated Gotober 20, 1885 Application filed June 30, 1884. Serial No. 136,429. (No model.)

To all whom it may concern.-

Be it known that I, JOHN C. DODs, a subject of the Queen of Great Britain and Ireland, residing in Philadelphia, Pennsylvania,

have invented certain Improvements in Converters, of which the following is a specification.

My invention relates to that class of Bessemer converters in which horizontal tuyeres IO are employed to permit of the use of a lowpressure blast, the object of my invention being to so construct the converter as to facilitate the lining and repairing of the same without delay or great expense, while permitting the 1 5 introduction and removal of the metal through the usual mouth of the converter.

In the accompanying drawings, Figure l is a vertical section of a Bessemer converter made according to my invention, and Fig. 2 is zo a sectional plan on the line l 2, Fig. l.

My converter is of the class termed trunnion-mounted converters,77 the trunnions B B being adapted to suitable bearings, which are not shown in the drawings, as they form no part of my invention. The use of the trunnions permits the metal to be introduced and discharged throughv the mouth, as usual, permits the blast to be stopped at any time, and also permits the main body of the converter to be turned upside down for repairs, as hereinafter described.

The body of the converter is composed of two main parts-namely, the upper portion, A, which is mounted in the ring or belt com- 3 5 posed of two segments, hh', and forming parts of the trunnions, while the lower portion of the converter, A', is made separable from the upper part on the line c, Fig. l. This lower portion carries the blast-chamber E, of any 4o ordinary construction, and insertible side tuyeres, m, which extend at intervals from the chamber E into the interior of the converter, and this removable portion A is of a depth suflicient to contain the entire charge.

The trunnion B is hollow, as usual, for the reception of the end of the blast-,pipe b, the interior of the trunnion communicating through a pipe, d, and branch c with the blast-chamber E.

5o Each portion A and A of the body of the converter has a lining, z, of refractory material, and the metal casing of the lower portion, A, of the converter is provided with a flange,

a" ada ted to be secured to a flange z', on the but, since in my converter the removable por- 6o tion A contains the charge, this portion can be replaced by another, or it can be quickly repaired and applied to the portion A, which is mounted on its trunnions.

For each upper portion of the converter I propose to furnish two or more extra lower or removable portions, which 'shall always be ready for application to the upper portion, the linings of these extra parts being readily prepared for use, as they will contain a sufficient supply of ignited charcoal or coke to dry and harden the lining and to properly heat it, so that the converter will be ready for immediate use as soon as the eXtra lower portion is in place. On the other hand, when the upper portion, A, of the converter requires repairing, all that is necessary, after taking out the portion A', is to turn the part A on its trunnions upside down, or partially so, so that it may be rammed up with ganister and repaired 8O by patching. This is a great advantage over the fixed converter, as that is lined with lirebrick and cannot be kept in repair, but is used until worn out and is then relined.

A further advantage over the iixed converter 8 5 is that whereas in the latter the blowing of the air or gas through the tuyeres has to be continued until the metal is entirely removed, in order to prevent it from backing into the tuyere-holes, in the tilting converter, on the 9o other hand, there is no such necessity for keeping up the blast after treatment, as the molten metal is carried away from the tuyeres by simply turning the converter on its trunnions.

The object of employing the A horizontal tuyeres is that it permits the use of low pressure, which, as is well known, eliminates the silicon more completely than wherehigh pressure is used, and reduces the cost of the blowingengine.

I am aware that converters have heretofore been provided with removable bottoms of a size to contain the charge, and that horizontal tuyeres also are not new in converters; but, so far as I am aware, it is new to provide a trunnion-mounted converter with a removable bottom provided with tuyeres extending through vthe side at intervals entirely around the converter, so as to treat the charge uniformly on all sides, of a size sufficient to contain the charge, and containing horizontal tuyeres.

I claim as my inventionl. A sectional converter having supporting- Y trunnions on its upper section, on which the converter may be tipped, and a removable lower section for containing the charge, provided with tuy eres extending through its sides JOHN C. DODS.

Witnesses:

J oHN M. CLAYTON, HARRY SMITH. 

